Sorry Guys,  posted this here 1st deleted it, then put it in Techie Stuff, 
''Flashing Hold Light Returns'' sounds like a sequel to a movie  
 
I have had no flashing hold light since last posting (TOP of the LIST) but it has dropped & stayed in 3rd occasionally when ive gone up a steepish hill (No flashing hold light tho) then when stopped for 5 mins returns to normal.
Anyway have had an oil slick of a gearbox leak getting worse by the week (still no hold light)
So read up on how to drain box with said Pela pump (worked a dream) fitted new gearbox sump gasket, cleaned sump pan, didn't do strainer as it had a rebuild last year (thinking maybe i should have but lack of time 

 ) refitted & refilled with 5 ltrs ATF Dexron III oil. 
When i started her up  
  
  surprise hold light flashing !! & now wont change up from 3rd  
  
 
Did all the level checks in 'D'. All correct.
There is still a small amount of oil leaking from somewhere. possible gearbox bell housing, could that be the torque converter ? That i hope is a separate issue !!  
  
 
If its any use it did use to change up n down at 40mph (from 3rd to 4th) prior to oil change with light throttle. Reading the threads n posts that seems quite normal  
  
  wot ever normal is  
 
Also put fresh antifreeze in & an oil n filter change too.  
Didn't do fuel filter tho, think i will do this next week. (have done fuel filter on my Ford Ecort, which has a priming pump, is there a link for Bongo fuel filter  

  or is it self bleeding 
  
  which i doubt)
Have had a look at various threads mentioning throttle position sensor, and ecu, and did see something about bleeding coolant ?
Any ideas would be gratefully accepted.
thanx for the ones already posted
PS any local Bongo friendly garages in south west cornwall